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All results from a given calculation for C5H7 (cyclopentenyl radical)

using model chemistry: MP2/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A2
Energy calculated at MP2/cc-pVTZ
 hartrees
Energy at 0K-194.218258
Energy at 298.15K-194.225550
HF Energy-193.435623
Nuclear repulsion energy164.266185
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP2/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3286 3120 6.70      
2 A1 3229 3066 6.61      
3 A1 3073 2918 31.25      
4 A1 1540 1463 0.01      
5 A1 1499 1424 4.87      
6 A1 1292 1226 0.55      
7 A1 1130 1073 3.75      
8 A1 1059 1005 0.04      
9 A1 937 889 2.87      
10 A1 823 782 0.19      
11 A2 3095 2938 0.00      
12 A2 1241 1179 0.00      
13 A2 1007 956 0.00      
14 A2 665 632 0.00      
15 A2 86 82 0.00      
16 B1 3114 2957 29.12      
17 B1 1157 1099 4.83      
18 B1 1026 975 4.24      
19 B1 822 780 6.53      
20 B1 641 608 61.63      
21 B1 445 422 6.79      
22 B2 3274 3109 3.35      
23 B2 3062 2907 26.96      
24 B2 1477 1402 1.54      
25 B2 1401 1330 7.02      
26 B2 1320 1253 0.30      
27 B2 1295 1230 5.81      
28 B2 1067 1013 0.32      
29 B2 916 870 19.72      
30 B2 725 688 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 22852.2 cm-1
Scaled (by 0.9495) Zero Point Vibrational Energy (zpe) 21698.2 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP2/cc-pVTZ
ABC
0.26488 0.25725 0.13704

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.258
C2 0.000 1.137 0.504
C3 0.000 -1.137 0.504
C4 0.000 0.770 -0.960
C5 0.000 -0.770 -0.960
H6 0.000 0.000 2.340
H7 0.000 2.190 0.731
H8 0.000 -2.190 0.731
H9 0.874 1.181 -1.470
H10 -0.874 1.181 -1.470
H11 0.874 -1.181 -1.470
H12 -0.874 -1.181 -1.470

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.36491.36492.34802.34801.08142.25282.25283.09843.09843.09843.0984
C21.36492.27491.50942.40432.15951.07713.33552.15882.15883.16773.1677
C31.36492.27492.40431.50942.15953.33551.07713.16773.16772.15882.1588
C42.34801.50942.40431.53953.38822.20883.40921.09201.09202.19752.1975
C52.34802.40431.50941.53953.38823.40922.20882.19752.19751.09201.0920
H61.08142.15952.15953.38823.38822.71732.71734.08274.08274.08274.0827
H72.25281.07713.33552.20883.40922.71734.38062.57422.57424.11994.1199
H82.25283.33551.07713.40922.20882.71734.38064.11994.11992.57422.5742
H93.09842.15883.16771.09202.19754.08272.57424.11991.74752.36212.9383
H103.09842.15883.16771.09202.19754.08272.57424.11991.74752.93832.3621
H113.09843.16772.15882.19751.09204.08274.11992.57422.36212.93831.7475
H123.09843.16772.15882.19751.09204.08274.11992.57422.93832.36211.7475

picture of cyclopentenyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 109.450 C1 C2 H7 134.261
C1 C3 C5 109.450 C1 C3 H8 134.261
C2 C1 C3 112.899 C2 C1 H6 123.551
C2 C4 C5 104.100 C2 C4 H9 111.153
C2 C4 H10 111.153 C3 C1 H6 123.551
C3 C5 C4 104.100 C3 C5 H11 111.153
C3 C5 H12 111.153 C4 C2 H7 116.288
C4 C5 H11 112.129 C4 C5 H12 112.129
C5 C3 H8 116.288 C5 C4 H9 112.129
C5 C4 H10 112.129 H9 C4 H10 106.296
H11 C5 H12 106.296
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability